Take this oportunity to buy the Speedo Fury Training Fin.
Unlock the Fury Fin potential. Training fins create increased resistance in the water, helping you to improve strength and endurance. Dual-Rails down the side of the fin give propulsion on the up and down beat of the kick, leaving you free to ingrain correct technique. Features Made from pliable 100% silicone. Material construction allows for greater propulsion and requires a powerful kick to unlock the Fury fin potential Textured top panel, with gloss finish and grip on bottom Foot pocket built from 3D scans for a better fitting fin Dual-Rails down the side of the fin give propulsion on the up and down beat of the kick Adult Unisex